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參數(shù)資料
| 型號： | MAX4370ESA+T |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 432K |
| 描述： | IC CNTRLR HOT-SWAP 8-SOIC |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | 熱交換控制器 |
| 應用： | 通用 |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | 2.7 V ~ 13.2 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設(shè)備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
The actual turn-on time is determined by the longer of
the two timings of Case A and Case B. Set the start-up
timer (t
START
) at 2 ?/SPAN> t
ON
or longer to guarantee enough
time for the output voltage to settle; also take into con-
sideration device parameter variation.
Slow Comparator Response Time (C
SPD
)
The slow comparator threshold is set at 50mV, and its
response time is determined by the external capacitor
connected to CSPD (Figure 8).
A minimum response time of 20祍 (typ) is achieved by
leaving this pin floating. This time is determined inter -
nally and is not affected by stray capacitance at CSPD
(up to 100pF).
Set the slow comparator response time to be longer
than the normal operation load transients.
ON Comparator
The ON/OFF function of the MAX4370 is controlled by
the ON comparator. This is a precision voltage com -
parator that can be used for temperature monitoring
(Figure 9) or as an additional undervoltage lockout. The
comparator threshold voltage is set at 0.6V with a 3mV
typical hysteresis.
The ON comparator initiates start-up when its input volt-
age (V
ON
) rises above the threshold voltage, and turns
off the MOSFET when the voltage falls below the
threshold. The ON comparator is also used to reset the
MAX4370 after a fault condition.
The ON comparator input and the STAT output can be
pulled to voltages up to 14V independently of V
IN
.
In some applications, it is useful to use connectors with
staggered leads. In Figure 10, the ON pin forces the
removable board to be powered up only when all con-
nections are made.
Current-Regulating Hot-Swap Controller with
DualSpeed/BiLevel Fault Protection
______________________________________________________________________________________ 13
0.01
0.1
1
10
100
1000
C
SPD
(nF)
1000
0.1
0.01
1
10
100
t
CSPD
(ms) = 0.2 ?/SPAN> C
SPD
(nF)
Figure 8. Slow Comparator Response Time vs. C
SPD
LOGIC
CONTROL
V
REF
R2
ON
NTC
R1 = R2 ?/SPAN> (V
REF
/ O.6 - 1)
R2 = VALUE OF THE NTC RESISTOR AT THE LIMIT TEMPERATURE
V
REF
= ANY REFERENCE VOLTAGE AVAILABLE OR V
IN
0.6V
R1
Figure 9. Temperature Monitoring and Protection
V
IN
ON
BACKPLANE
10k
1M
RESET
V
CC
MAX4370
VSEN GATE
REMOVABLE
CARD
Figure 10. Fail-Safe Connector
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|---|---|
| MAX4372FEBT | 制造商:Maxim Integrated Products 功能描述:UCSP/SOT23, MICROPOWER, HIGH-SIDE CURRENT-SENSE AMP - Rail/Tube |
| MAX4372FEBT+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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| MAX4372FEBT-T | 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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